EP2609064B1 - Pharmaceutical compositions comprising derivatives of perillyl alcohol - Google Patents

Pharmaceutical compositions comprising derivatives of perillyl alcohol Download PDF

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EP2609064B1
EP2609064B1 EP11820740.6A EP11820740A EP2609064B1 EP 2609064 B1 EP2609064 B1 EP 2609064B1 EP 11820740 A EP11820740 A EP 11820740A EP 2609064 B1 EP2609064 B1 EP 2609064B1
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cancer
poh
tmz
pharmaceutical composition
perillyl alcohol
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EP11820740.6A
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German (de)
English (en)
French (fr)
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EP2609064A2 (en
EP2609064A4 (en
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Thomas Chen
Daniel Levin
Satish Pupalli
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Neonc Technologies Inc
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Neonc Technologies Inc
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Priority to EP16184092.1A priority Critical patent/EP3173080B1/en
Priority to EP15153141.5A priority patent/EP2898883B1/en
Priority to EP15153140.7A priority patent/EP2883543B1/en
Priority to EP19214554.8A priority patent/EP3685835B1/en
Publication of EP2609064A2 publication Critical patent/EP2609064A2/en
Publication of EP2609064A4 publication Critical patent/EP2609064A4/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/33—Heterocyclic compounds
    • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/495—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with two or more nitrogen atoms as the only ring heteroatoms, e.g. piperazine or tetrazines
    • A—HUMAN NECESSITIES
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    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/045—Hydroxy compounds, e.g. alcohols; Salts thereof, e.g. alcoholates
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/33—Heterocyclic compounds
    • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/40—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with one nitrogen as the only ring hetero atom, e.g. sulpiride, succinimide, tolmetin, buflomedil
    • A61K31/4015—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with one nitrogen as the only ring hetero atom, e.g. sulpiride, succinimide, tolmetin, buflomedil having oxo groups directly attached to the heterocyclic ring, e.g. piracetam, ethosuximide
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/33—Heterocyclic compounds
    • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/41—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with two or more ring hetero atoms, at least one of which being nitrogen, e.g. tetrazole
    • A61K31/415—1,2-Diazoles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/33—Heterocyclic compounds
    • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/41—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with two or more ring hetero atoms, at least one of which being nitrogen, e.g. tetrazole
    • A61K31/4164—1,3-Diazoles
    • A61K31/4188—1,3-Diazoles condensed with other heterocyclic ring systems, e.g. biotin, sorbinil
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K45/00—Medicinal preparations containing active ingredients not provided for in groups A61K31/00 - A61K41/00
    • A61K45/06—Mixtures of active ingredients without chemical characterisation, e.g. antiphlogistics and cardiaca
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
    • A61K47/50—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates
    • A61K47/51—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent
    • A61K47/54—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an organic compound
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
    • A61K47/50—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates
    • A61K47/51—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent
    • A61K47/54—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an organic compound
    • A61K47/542—Carboxylic acids, e.g. a fatty acid or an amino acid
    • A—HUMAN NECESSITIES
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    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
    • A61K47/50—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates
    • A61K47/51—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent
    • A61K47/54—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an organic compound
    • A61K47/543—Lipids, e.g. triglycerides; Polyamines, e.g. spermine or spermidine
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/0012—Galenical forms characterised by the site of application
    • A61K9/0043—Nose
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    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00—Drugs for disorders of the nervous system
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P35/00—Antineoplastic agents
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P35/00—Antineoplastic agents
    • A61P35/02—Antineoplastic agents specific for leukemia
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
    • C07B59/00—Introduction of isotopes of elements into organic compounds ; Labelled organic compounds per se
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C33/00—Unsaturated compounds having hydroxy or O-metal groups bound to acyclic carbon atoms
    • C07C33/05—Alcohols containing rings other than six-membered aromatic rings
    • C07C33/14—Alcohols containing rings other than six-membered aromatic rings containing six-membered rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D207/00—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom
    • C07D207/02—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D207/18—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having one double bond between ring members or between a ring member and a non-ring member
    • C07D207/22—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having one double bond between ring members or between a ring member and a non-ring member with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D207/24—Oxygen or sulfur atoms
    • C07D207/26—2-Pyrrolidones
    • C—CHEMISTRY; METALLURGY
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    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D231/00—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings
    • C07D231/02—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings
    • C07D231/10—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
    • C07D231/12—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms
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    • C07D487/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains two hetero rings
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    • C07C2601/00—Systems containing only non-condensed rings
    • C07C2601/12—Systems containing only non-condensed rings with a six-membered ring
    • C07C2601/16—Systems containing only non-condensed rings with a six-membered ring the ring being unsaturated

Definitions

  • the present invention relates to POH (perillyl alcohol) derivatives.
  • the present invention further the use of POH carbamates to treat cancer.
  • Malignant gliomas the most common form of central nervous system (CNS) cancers, is currently considered essentially incurable.
  • CNS central nervous system
  • anaplastic astrocytomas Grade III
  • GBM glioblastoma multiforme
  • the present standard of care for malignant gliomas consists of surgery, ionizing radiation, and chemotherapy.
  • the past 50 years have not seen any significant improvement in prognosis for malignant gliomas.
  • the poor response of tumors, including malignant gliomas, to various types of chemotherapeutic agents are often due to intrinsic drug resistance. Additionally, acquired resistance of initially well-responding tumors and unwanted side effects are other problems that frequently thwart long-term treatment using chemotherapeutic agents.
  • various analogues of chemotherapeutic agents have been prepared in an effort to overcome these problems.
  • the analogues include novel therapeutic agents which are hybrid molecules of at least two existing therapeutic agents.
  • cisplatin has been conjugated with Pt-(II) complexes with cytotoxic codrugs, or conjugated with bioactive shuttle components such as porphyrins, bile acids, hormones, or modulators that expedite the transmembrane transport or the drug accumulation within the cell.
  • bioactive shuttle components such as porphyrins, bile acids, hormones, or modulators that expedite the transmembrane transport or the drug accumulation within the cell.
  • (6-Aminomethylnicotinate) dichloridoplatinum(II) complexes esterified with terpene alcohols were tested on a panel of human tumor cell lines. The terpenyl moieties in these complexes appeared to fulfill a transmembrane shuttle function and increased the rate and extent of the uptake of these conjugates into various tumor cell lines. Schobert et al.
  • Perillyl alcohol a naturally occurring monoterpene, has been suggested to be an effective agent against a variety of cancers, including CNS cancer, breast cancer, pancreatic cancer, lung cancer, melanomas and colon cancer. Gould, M. Cancer chemoprevention and therapy by monoterpenes. Environ Health Perspect. 1997 June; 105 (Suppl 4): 977-979 .
  • Hybrid molecules containing both perillyl alcohol and retinoids were prepared to increase apoptosis-inducing activity.
  • Das et al. Design and synthesis of potential new apoptosis agents hybrid compounds containing perillyl alcohol and new constrained retinoids. Tetrahedron Letters 2010, 51, 1462-1466 .
  • perillyl alcohol derivatives including perillyl alcohol conjugated with other therapeutic agents, and use this material in the treatment of cancers such as malignant gliomas, as well as other brain disorders such as Parkinson's and Alzheimer's disease.
  • Perillyl alcohol derivatives may be administered alone or in combination with other treatment methods including radiation, standard chemotherapy, and surgery. The administration can also be through various routes including intranasal, oral, oral-tracheal for pulmonary delivery, and transdermal.
  • the present invention provides for a pharmaceutical composition
  • a pharmaceutical composition comprising a perillyl alcohol (POH) carbamate conjugated with a chemotherapeutic agent which is selected from a DNA alkylating agent, a topoisomerase inhibitor, an endoplasmic reticulum stress inducing agent, a platinum compound, an antimetabolite, and rolipram.
  • a chemotherapeutic agent which is selected from a DNA alkylating agent, a topoisomerase inhibitor, an endoplasmic reticulum stress inducing agent, a platinum compound, an antimetabolite, and rolipram.
  • the therapeutic agents are dimethyl celecoxib (DMC), temozolomide (TMZ) or rolipram.
  • the perillyl alcohol carbamates may be 4-(Bis-N,N'-4-isopropenyl cyclohex-1-enylmethyloxy carbonyl [5-(2,5-dimethyl phenyl)-3-trifluoromethyl pyrazol-1-yl] benzenesulfonamide, 4-(3-cyclopentyloxy-4-methoxy phenyl)-2-oxo-pyrrolidine-1-carboxylic acid 4-isopropenyl cyclohex-1-enylmethyl ester, and 3-methyl 4-oxo-3,4-dihydroimidazo[5,1-d][1,2,3,5]tetrazine-8-carbonyl)-carbamic acid -4-isopropenyl cyclohex-1-enylmethyl ester.
  • compositions of the present invention may be administered before, during or after radiation.
  • the pharmaceutical compositions may be administered before, during or after the administration of a chemotherapeutic agent.
  • routes of administration of the pharmaceutical compositions include inhalation, intranasal, oral, intravenous, subcutaneous or intramuscular administration.
  • a method for treating a disease in a mammal comprising the step of delivering to the mammal a therapeutically effective amount of a perillyl alcohol carbamate.
  • the method may further comprise the step of treating the mammal with radiation, and/or further comprise the step of delivering to the mammal a chemotherapeutic agent.
  • the diseases treated may be cancer, including a tumor of the nervous system, such as a glioblastoma.
  • the routes of administration of the perillyl alcohol carbamate include inhalation, intranasal, oral, intravenous, subcutaneous or intramuscular administration.
  • the present invention also provides for a process for making a POH carbamate, comprising the step of reacting a first reactant of perillyl chloroformate with a second reactant, which may be dimethyl celecoxib (DMC), temozolomide (TMZ) or rolipram.
  • a second reactant which may be dimethyl celecoxib (DMC), temozolomide (TMZ) or rolipram.
  • DMC dimethyl celecoxib
  • TMZ temozolomide
  • rolipram the reaction may be carried out in the presence of acetone and a catalyst of potassium carbonate.
  • the reaction may be carried out in the presence of tetrahydrofuran and a catalyst of n-butyl lithium.
  • the perillyl chloroformate may also be prepared by reacting perillyl alcohol with phosgene.
  • the present invention provides for a derivative of monoterpene which is a perillyl alcohol carbamate.
  • the perillyl alcohol carbamate is conjugated with a chemotherapeutic agent.
  • the perillyl alcohol carbamate may be formulated into a pharmaceutical composition, where it is present in amounts ranging from about 0.01% (w/w) to about 100% (w/w), from about 0.1% (w/w) to about 80% (w/w), from about 1% (w/w) to about 70% (w/w), from about 10% (w/w) to about 60% (w/w), or from about 0.1% (w/w) to about 20% (w/w).
  • compositions can be administered alone, or may be co-administered together with radiation or another agent (e.g., a chemotherapeutic agent), to treat a disease such as cancer.
  • Treatments may be sequential, with the perillyl alcohol carbamate being administered before or after the administration of other agents.
  • a perillyl alcohol carbamate may be used to sensitize a cancer patient to radiation or chemotherapy.
  • agents may be administered concurrently.
  • the route of administration may vary, and can include, inhalation, intranasal, oral, transdermal, intravenous, subcutaneous or intramuscular injection. It is further disclosed a method of treating a disease such as cancer, comprising the step of delivering to a patient a therapeutically effective amount of the perillyl alcohol carbamate.
  • compositions of the present invention may contain perillyl alcohol (S(-)) and (R(+)).
  • Carbamate refers to a class of chemical compounds sharing the functional group based on a carbonyl group flanked by an oxygen and a nitrogen.
  • R 1 , R 2 and R 3 can be a group such as alkyl, aryl, etc., which can be substituted.
  • the R groups on the nitrogen and the oxygen may form a ring.
  • R 1 -OH may be a monoterpene, e.g., POH.
  • the R 2 -N-R 3 moiety may be a therapeutic agent.
  • Carbamates may be synthesized by reacting isocyanate and alcohol, or by reacting chloroformate with amine. Carbamates may be synthesized by reactions making use of phosgene or phosgene equivalents. For example, carbamates may be synthesized by reacting phosgene gas, diphosgene or a solid phosgene precursor such as triphosgene with two amines or an amine and an alcohol. Carbamates (also known as urethanes) can also be made from reaction of a urea intermediate with an alcohol. Dimethyl carbonate and diphenyl carbonate are also used for making carbamates.
  • carbamates may be synthesized through the reaction of alcohol and/or amine precursors with an ester-substituted diaryl carbonate, such as bismethylsalicylcarbonate (BMSC).
  • BMSC bismethylsalicylcarbonate
  • Suitable reaction solvents include, but are not limited to, tetrahydrofuran, dichloromethane, dichloroethane, acetone, and diisopropyl ether.
  • the reaction may be performed at a temperature ranging from about -70°C to about 80°C, or from about -65°C to about 50°C.
  • the molar ratio of perillyl chloroformate to the substrate R - NH 2 may range from about 1:1 to about 2:1, from about 1:1 to about 1.5:1, from about 2:1 to about 1:1, or from about 1.05:1 to about 1.1:1.
  • Suitable bases include, but are not limited to, organic bases, such as triethylamine, potassium carbonate, N,N'-diisopropylethylamine, butyl lithium, and potassium-t-butoxide.
  • carbamates may be synthesized by the following approach:
  • Suitable reaction solvents include, but are not limited to, dichloromethane, dichloroethane, toluene, diisopropyl ether, and tetrahydrofuran.
  • the reaction may be performed at a temperature ranging from about 25°C to about 110°C, or from about 30°C to about 80°C, or about 50°C.
  • a POH carbamate is synthesized by a process comprising the step of reacting a first reactant of perillyl chloroformate with a second reactant such as dimethyl celecoxib (DMC), temozolomide (TMZ) and rolipram.
  • the reaction may be carried out in the presence of tetrahydrofuran and a base such as n-butyl lithium.
  • Perillyl chloroformate may be made by reacting POH with phosgene.
  • POH conjugated with temozolomide through a carbamate bond may be synthesized by reacting temozolomide with oxalyl chloride followed by reaction with perillyl alcohol.
  • the reaction may be carried out in the presence of 1,2-dichloroethane.
  • POH carbamates encompassed by the present invention include, but not limited to, 4-(bis-N,N'-4-isopropenyl cyclohex-1-enylmethyloxy carbonyl [5-(2,5-dimethyl phenyl)-3-trifluoromethyl pyrazol-1-yl] benzenesulfonamide, 4-(3-cyclopentyloxy-4-methoxy phenyl)-2-oxo-pyrrolidine-1-carboxylic acid 4-isopropenyl cyclohex-1-enylmethyl ester, and (3-methyl 4-oxo-3,4-dihydroimidazo[5,1-d][1,2,3,5]tetrazine-8-carbonyl)carbamic acid-4-isopropenyl cyclohex-1-enylmethyl ester.
  • the details of the chemical reactions generating these compounds are described in the Examples below.
  • a POH conjugate encompassed by the present invention is a POH covalently bound via a chemical linking group to a therapeutic agent.
  • the molar ratio of the POH to the therapeutic agent in the conjugate may be 1:1, 1:2, 1:3, 1:4, 2:1, 3:1, 4:1, or any other suitable molar ratios.
  • the POH and the therapeutic agent is covalently linked through carbamate.
  • the therapeutic agent may be any agent bearing at least one carboxylic acid functional group, or any agent bearing at least one amine functional group.
  • a perillyl alcohol conjugate is perillyl alcohol covalently bound via a chemical linking group to a chemotherapeutic agent.
  • Anti-cancer agents that may be conjugated with POH can have one or more of the following effects on cancer cells or the subject: cell death; decreased cell proliferation; decreased numbers of cells; inhibition of cell growth; apoptosis; necrosis; mitotic catastrophe; cell cycle arrest; decreased cell size; decreased cell division; decreased cell survival; decreased cell metabolism; markers of cell damage or cytotoxicity; indirect indicators of cell damage or cytotoxicity such as tumor shrinkage; improved survival of a subject; or disappearance of markers associated with undesirable, unwanted, or aberrant cell proliferation.
  • U.S. Patent Publication No. 20080275057 U.S. Patent Publication No. 20080275057 .
  • Chemotherapeutic agents are DNA alkylating agents, topoisomerase inhibitors, endoplasmic reticulum stress inducing agents, a platinum compound, an antimetabolite, or rolipram.
  • Non-limiting examples of DNA alkylating agents are nitrogen mustards, such as Cyclophosphamide (Ifosfamide, Trofosfamide), Chlorambucil (Melphalan, Prednimustine), Bendamustine, Uramustine and Estramustine; nitrosoureas, such as Carmustine (BCNU), Lomustine (Semustine), Fotemustine, Nimustine, Ranimustine and Streptozocin; alkyl sulfonates, such as Busulfan (Mannosulfan, Treosulfan); Aziridines, such as Carboquone, Triaziquone, Triethylenemelamine; Hydrazines (Procarbazine); Triazenes such as dacarbazine and Temozolomide (TMZ); Altretamine and Mitobronitol.
  • nitrogen mustards such as Cyclophosphamide (Ifosfamide, Trofosfamide), Chlorambucil (Me
  • Topoisomerase I inhibitors include Campothecin derivatives including SN-38, APC, NPC, campothecin, topotecan, exatecan mesylate, 9-nitrocamptothecin, 9-aminocamptothecin, lurtotecan, rubitecan, silatecan, gimatecan, diflomotecan, extatecan, BN-80927, DX-8951f, and MAG-CPT as decribed in Pommier Y. (2006) Nat. Rev. Cancer 6(10):789-802 and U.S. Patent Publication No.
  • Topoisomerase II inhibitors include, but are not limited to Etoposide and Teniposide.
  • Dual topoisomerase I and II inhibitors include, but are not limited to, Saintopin and other Naphthecenediones, DACA and other Acridine-4-Carboxamindes, Intoplicine and other Benzopyridoindoles, TAS-I03 and other 7H-indeno[2,1-c]Quinoline-7-ones, Pyrazoloacridine, XR 11576 and other Benzophenazines, XR 5944 and other Dimeric compounds, 7-oxo-7H-dibenz[f,ij]Isoquinolines and 7-oxo-7H-benzo[e]pyrimidines, and Anthracenyl-amino Acid Conjugates as described in Denny and Baguley (2003) Curr.
  • Top. Med. Chem. 3(3):339-353 Some agents inhibit Topoisomerase II and have DNA intercalation activity such as, but not limited to, Anthracyclines (Aclarubicin, Daunorubicin, Doxorubicin, Epirubicin, Idarubicin, Amrubicin, Pirarubicin, Valrubicin, Zorubicin) and Antracenediones (Mitoxantrone and Pixantrone).
  • Anthracyclines Aclarubicin, Daunorubicin, Doxorubicin, Epirubicin, Idarubicin, Amrubicin, Pirarubicin, Valrubicin, Zorubicin
  • Antracenediones Mitoxantrone and Pixantrone
  • endoplasmic reticulum stress inducing agents include, but are not limited to, dimethyl-celecoxib (DMC), nelfinavir, celecoxib, and boron radiosensitizers (i.e. velcade (Bortezomib)).
  • DMC dimethyl-celecoxib
  • nelfinavir nelfinavir
  • celecoxib nelfinavir
  • boron radiosensitizers i.e. velcade (Bortezomib)
  • Platinum based compounds are a subclass of DNA alkylating agents.
  • Non-limiting examples of such agents include Cisplatin, Nedaplatin, Oxaliplatin, Triplatin tetranitrate, Satraplatin, Aroplatin, Lobaplatin, and JM-216. (see McKeage et al. (1997) J. Clin. Oncol. 201 :1232-1237 and in general, CHEMOTHERAPY FOR GYNECOLOGICAL NEOPLASM, CURRENT THERAPY AND NOVEL APPROACHES, in the Series Basic and Clinical Oncology, Angioli et al. Eds., 2004 ).
  • FOLFOX is an abbreviation for a type of combination therapy that is used to treat colorectal cancer. It includes 5-FU, oxaliplatin and leucovorin. Information regarding this treatment is available on the National Cancer Institute's web site, cancer.gov, last accessed on January 16, 2008.
  • FOLFOX/BV is an abbreviation for a type of combination therapy that is used to treat colorectal cancer.
  • This therapy includes 5-FU, oxaliplatin, leucovorin and Bevacizumab.
  • Furthennore, "XELOX/BV” is another combination therapy used to treat colorectal cancer, which includes the prodrug to 5-FU, known as Capecitabine (Xeloda) in combination with oxaliplatin and bevacizumab. Infonnation regarding these treatments are available on the National Cancer Institute's web site, cancer.gov or from 23 the National Comprehensive Cancer Network's web site, nccn.org, last accessed on May 27,2008.
  • Non-limiting examples of antimetabolite agents include Folic acid based, i.e. dihydrofolate reductase inhibitors, such as Aminopterin, Methotrexate and Pemetrexed; thymidylate synthase inhibitors, such as Raltitrexed, Pemetrexed; Purine based, i.e.
  • an adenosine deaminase inhibitor such as Pentostatin, a thiopurine, such as Thioguanine and Mercaptopurine, a halogenated/ribonucleotide reductase inhibitor, such as Cladribine, Clofarabine, Fludarabine, or a guanine/guanosine: thiopurine, such as Thioguanine; or Pyrimidine based, i.e.
  • cytosine/cytidine hypomethylating agent, such as Azacitidine and Decitabine, a DNA polymerase inhibitor, such as Cytarabine, a ribonucleotide reductase inhibitor, such as Gemcitabine, or a thymine/thymidine: thymidylate synthase inhibitor, such as a Fluorouracil (5-FU).
  • hypomethylating agent such as Azacitidine and Decitabine
  • a DNA polymerase inhibitor such as Cytarabine
  • a ribonucleotide reductase inhibitor such as Gemcitabine
  • thymine/thymidine thymidylate synthase inhibitor, such as a Fluorouracil (5-FU).
  • 5-FU Equivalents to 5-FU include prodrugs, analogs and derivative thereof such as 5'-deoxy-5-fluorouridine (doxifluroidine), 1-tetrahydrofuranyl-5-fluorouracil (ftorafur), Capecitabine (Xeloda), S-I (MBMS-247616, consisting of tegafur and two modulators, a 5-chloro-2,4-dihydroxypyridine and potassium oxonate), ralititrexed (tomudex), nolatrexed (Thymitaq, AG337), LY231514 and ZD9331, as described for example in Papamicheal (1999) The Oncologist 4:478-487 .
  • doxifluroidine 1-tetrahydrofuranyl-5-fluorouracil
  • Capecitabine Xeloda
  • S-I MBMS-247616, consisting of tegafur and two modulators
  • the purity of the monoterpene derivatives may be assayed by gas chromatography (GC) or high pressure liquid chromatography (HPLC).
  • Other techniques for assaying the purity of monoterpene derivatives and for determining the presence of impurities include, but are not limited to, nuclear magnetic resonance (NMR) spectroscopy, mass spectrometry (MS), GC-MS, infrared spectroscopy (IR), and thin layer chromatography (TLC). Chiral purity can be assessed by chiral GC or measurement of optical rotation.
  • the monoterpene derivatives may be purified by methods such as crystallization, or by separating the monoterpene derivative from impurities according to the unique physicochemical properties (e.g., solubility or polarity) of the derivative. Accordingly, the monoterpene derivative can be separated from the monoterpene by suitable separation techniques known in the art, such as preparative chromatography, (fractional) distillation, or (fractional) crystallization.
  • a monoterpene derivative may be administered alone, or in combination with radiation, surgery or chemotherapeutic agents.
  • a monoterpene derivative may also be co-administered with antiviral agents, anti-inflammatory agents or antibiotics. The agents may be administered concurrently or sequentially.
  • a monoterpenes derivative can be administered before, during or after the administration of the other active agent(s).
  • the monoterpene derivative may be used in combination with radiation therapy. It is further disclosed a method of treating tumor cells, such as malignant glioma cells, with radiation, where the cells are treated with an effective amount of a monoterpene derivative, such as a perillyl alcohol carbamate, and then exposed to radiation. Monoterpene derivative treatment may be before, during and/or after radiation. For example, the monoterpene derivative may be administered continuously beginning one week prior to the initiation of radiotherapy and continued for two weeks after the completion of radiotherapy.
  • a monoterpene derivative such as a perillyl alcohol carbamate
  • a method of treating tumor cells such as malignant glioma cells, with chemotherapy, where the cells are treated with an effective amount of a monoterpene derivative, such as a perillyl alcohol carbamate, and then exposed to chemotherapy.
  • Monoterpene derivative treatment may be before, during and/or after chemotherapy.
  • Cancers that can be treated by the present monoterpene derivatives include, but are not limited to, lung cancer, ear, nose and throat cancer, leukemia, colon cancer, melanoma, pancreatic cancer, mammary cancer, prostate cancer, breast cancer, hematopoietic cancer, ovarian cancer, basal cell carcinoma, biliary tract cancer; bladder cancer; bone cancer; breast cancer; cervical cancer; choriocarcinoma; colon and rectum cancer; connective tissue cancer; cancer of the digestive system; endometrial cancer; esophageal cancer; eye cancer; cancer of the head and neck; gastric cancer; intra-epithelial neoplasm; kidney cancer; larynx cancer; leukemia including acute myeloid leukemia, acute lymphoid leukemia, chronic myeloid leukemia, chronic lymphoid leukemia; liver cancer; lymphoma including Hodgkin's and Non-Hodgkin's lymphoma; myeloma; fibroma
  • composition may be administered by any method known in the art, including, without limitation, intranasal, oral, transdermal, ocular, intraperitoneal, inhalation, intravenous, ICV, intracisternal injection or infusion, subcutaneous, implant, vaginal, sublingual, urethral (e.g., urethral suppository), subcutaneous, intramuscular, intravenous, rectal, sub-lingual, mucosal, ophthalmic, spinal, intrathecal, intra-articular, intra-arterial, sub-arachinoid, bronchial and lymphatic administration.
  • intranasal oral, transdermal, ocular, intraperitoneal, inhalation, intravenous, ICV, intracisternal injection or infusion, subcutaneous, implant, vaginal, sublingual, urethral (e.g., urethral suppository), subcutaneous, intramuscular, intravenous, rectal, sub-lingual, mucosal, ophthalmic, spinal
  • Topical formulation may be in the form of gel, ointment, cream, aerosol, etc; intranasal formulation can be delivered as a spray or in a drop; transdermal formulation may be administered via a transdermal patch or iontorphoresis; inhalation formulation can be delivered using a nebulizer or similar device.
  • Compositions can also take the form of tablets, pills, capsules, semisolids, powders, sustained release formulations, solutions, suspensions, elixirs, aerosols, or any other appropriate compositions.
  • one or more of monoterpene derivatives may be mixed with a pharmaceutical acceptable carrier, adjuvant and/or excipient, according to conventional pharmaceutical compounding techniques.
  • Pharmaceutically acceptable carriers that can be used in the present compositions encompass any of the standard pharmaceutical carriers, such as a phosphate buffered saline solution, water, and emulsions, such as an oil/water or water/oil emulsion, and various types of wetting agents.
  • compositions can additionally contain solid pharmaceutical excipients such as starch, cellulose, talc, glucose, lactose, sucrose, gelatin, malt, rice, flour, chalk, silica gel, magnesium stearate, sodium stearate, glycerol monostearate, sodium chloride, dried skim milk and the like.
  • Liquid and semisolid excipients may be selected from glycerol, propylene glycol, water, ethanol and various oils, including those of petroleum, animal, vegetable or synthetic origin, e.g., peanut oil, soybean oil, mineral oil, sesame oil, etc.
  • Liquid carriers, particularly for injectable solutions include water, saline, aqueous dextrose, and glycols. For examples of carriers, stabilizers and adjuvants, see Remington's Pharmaceutical Sciences, edited by E. W. Martin (Mack Publishing Company, 18th ed., 1990 ).
  • the compositions also can include stabilizers and preservatives.
  • the term "therapeutically effective amount” is an amount sufficient to treat a specified disorder or disease or alternatively to obtain a pharmacological response treating a disorder or disease.
  • Methods of determining the most effective means and dosage of administration can vary with the composition used for therapy, the purpose of the therapy, the target cell being treated, and the subject being treated. Treatment dosages generally may be titrated to optimize safety and efficacy. Single or multiple administrations can be carried out with the dose level and pattern being selected by the treating physician. Suitable dosage formulations and methods of administering the agents can be readily determined by those of skill in the art.
  • the composition are administered at about 0.01 mg/kg to about 200 mg/kg, about 0.1 mg/kg to about 100 mg/kg, or about 0.5 mg/kg to about 50 mg/kg.
  • the effective amount may be less than when the agent is used alone.
  • Transdermal formulations may be prepared by incorporating the active agent in a thixotropic or gelatinous carrier such as a cellulosic medium, e.g., methyl cellulose or hydroxyethyl cellulose, with the resulting formulation then being packed in a transdermal device adapted to be secured in dermal contact with the skin of a wearer.
  • a thixotropic or gelatinous carrier such as a cellulosic medium, e.g., methyl cellulose or hydroxyethyl cellulose
  • the composition may be rubbed onto a membrane of the patient, for example, the skin, preferably intact, clean, and dry skin, of the shoulder or upper arm and or the upper torso, and maintained thereon for a period of time sufficient for delivery of the monoterpene derivative to the blood serum of the patient.
  • composition of the present invention in gel form may be contained in a tube, a sachet, or a metered pump.
  • a tube or sachet may contain one unit dose, or more than one unit dose, of the composition.
  • a metered pump may be capable of dispensing one metered dose of the composition.
  • compositions as described above for intranasal administration can further comprise a permeation enhancer.
  • a permeation enhancer Southall et al. Developments in Nasal Drug Delivery, 2000 .
  • the monoterpene derivative may be administered intranasally in a liquid form such as a solution, an emulsion, a suspension, drops, or in a solid form such as a powder, gel, or ointment.
  • Devices to deliver intranasal medications are well known in the art.
  • Nasal drug delivery can be carried out using devices including, but not limited to, intranasal inhalers, intranasal spray devices, atomizers, nasal spray bottles, unit dose containers, pumps, droppers, squeeze bottles, nebulizers, metered dose inhalers (MDI), pressurized dose inhalers, insufflators, and bi-directional devices.
  • the nasal delivery device can be metered to administer an accurate effective dosage amount to the nasal cavity.
  • the nasal delivery device can be for single unit delivery or multiple unit delivery.
  • the ViaNase Electronic Atomizer from Kurve Technology (Bethell, Washington) can be used in this invention (http://www.kurvetech.com).
  • the compounds of the present invention may also be delivered through a tube, a catheter, a syringe, a packtail, a pledget, a nasal tampon or by submucosal infusion.
  • the monoterpene derivative can be formulated as aerosols using standard procedures.
  • the monoterpene derivative may be formulated with or without solvents, and formulated with or without carriers.
  • the formulation may be a solution, or may be an aqueous emulsion with one or more surfactants.
  • an aerosol spray may be generated from pressurized container with a suitable propellant such as, dichlorodifluoromethane, trichlorofluoromethane, dichlorotetrafluoroethane, hydrocarbons, compressed air, nitrogen, carbon dioxide, or other suitable gas.
  • the dosage unit can be determined by providing a valve to deliver a metered amount.
  • Pump spray dispensers can dispense a metered dose or a dose having a specific particle or droplet size.
  • aerosol refers to a suspension of fine solid particles or liquid solution droplets in a gas.
  • aerosol includes a gas-borne suspension of droplets of a monoterpene as may be produced in any suitable device, such as an MDI, a nebulizer, or a mist sprayer. Aerosol also includes a dry powder composition of the composition of the instant invention suspended in air or other carrier gas. Gonda (1990) Critical Reviews in Therapeutic Drug Carrier Systems 6:273-313 . Raeburn et al., (1992) Pharmacol. Toxicol. Methods 27:143-159 .
  • the monoterpene derivative may be delivered to the nasal cavity as a powder in a form such as microspheres delivered by a nasal insufflator.
  • the monoterpene derivative may be absorbed to a solid surface, for example, a carrier.
  • the powder or microspheres may be administered in a dry, air-dispensable form.
  • the powder or microspheres may be stored in a container of the insufflator.
  • the powder or microspheres may be filled into a capsule, such as a gelatin capsule, or other single dose unit adapted for nasal administration.
  • the pharmaceutical composition can be delivered to the nasal cavity by direct placement of the composition in the nasal cavity, for example, in the form of a gel, an ointment, a nasal emulsion, a lotion, a cream, a nasal tampon, a dropper, or a bioadhesive strip.
  • it can be desirable to prolong the residence time of the pharmaceutical composition in the nasal cavity, for example, to enhance absorption.
  • the pharmaceutical composition can optionally be formulated with a bioadhesive polymer, a gum (e.g., xanthan gum), chitosan (e.g., highly purified cationic polysaccharide), pectin (or any carbohydrate that thickens like a gel or emulsifies when applied to nasal mucosa), a microsphere (e.g., starch, albumin, dextran, cyclodextrin), gelatin, a liposome, carbamer, polyvinyl alcohol, alginate, acacia, chitosans and/or cellulose (e.g., methyl or propyl; hydroxyl or carboxy; carboxymethyl or hydroxylpropyl).
  • a bioadhesive polymer e.g., xanthan gum
  • chitosan e.g., highly purified cationic polysaccharide
  • pectin or any carbohydrate that thickens like a
  • composition containing the purified monoterpene can be administered by oral inhalation into the respiratory tract, i.e., the lungs.
  • Typical delivery systems for inhalable agents include nebulizer inhalers, dry powder inhalers (DPI), and metered-dose inhalers (MDI).
  • DPI dry powder inhalers
  • MDI metered-dose inhalers
  • Nebulizer devices produce a stream of high velocity air that causes a therapeutic agent in the form of liquid to spray as a mist.
  • the therapeutic agent is formulated in a liquid form such as a solution or a suspension of particles of suitable size.
  • the particles are micronized.
  • the term "micronized” is defined as having about 90% or more of the particles with a diameter of less than about 10 ⁇ m.
  • Suitable nebulizer devices are provided commercially, for example, by PARI GmbH (Starnberg, Germany).
  • Other nebulizer devices include Respimat (Boehringer Ingelheim) and those disclosed in, for example, U.S. Patent Nos. 7,568,480 and 6,123,068 , and WO 97/12687 .
  • the monoterpenes can be formulated for use in a nebulizer device as an aqueous solution or as a liquid suspension.
  • DPI devices typically administer a therapeutic agent in the form of a free flowing powder that can be dispersed in a patient's air-stream during inspiration. DPI devices which use an external energy source may also be used in the present invention.
  • the therapeutic agent can be formulated with a suitable excipient (e.g., lactose).
  • a suitable excipient e.g., lactose
  • a dry powder formulation can be made, for example, by combining dry lactose having a particle size between about 1 ⁇ m and 100 ⁇ m with micronized particles of the monoterpenes and dry blending. Alternatively, the monoterpene can be formulated without excipients. The formulation is loaded into a dry powder dispenser, or into inhalation cartridges or capsules for use with a dry powder delivery device.
  • DPI devices examples include Diskhaler (GlaxoSmithKline, Research Triangle Park, N.C.) (see, e.g., U.S. Patent No. 5,035,237 ); Diskus (GlaxoSmithKline) (see, e.g., U.S. Patent No. 6,378,519 ; Turbuhaler (AstraZeneca, Wilmington, Del.) (see, e.g., U.S. Patent No. 4,524,769 ); and Rotahaler (GlaxoSmithKline) (see, e.g., U.S. Patent No. 4,353,365 ). Further examples of suitable DPI devices are described in U.S. Patent Nos. 5,415,162 , 5,239,993 , and 5,715,810 and references therein.
  • MDI devices typically discharge a measured amount of therapeutic agent using compressed propellant gas.
  • Formulations for MDI administration include a solution or suspension of active ingredient in a liquefied propellant.
  • propellants include hydrofluoroalklanes (HFA), such as 1,1,1,2-tetrafluoroethane (HFA 134a) and 1,1,1,2,3,3,3-heptafluoro-n-propane, (HFA 227), and chlorofluorocarbons, such as CCl 3 F.
  • HFA hydrofluoroalklanes
  • HFA 134a 1,1,1,2-tetrafluoroethane
  • HFA 227 1,1,1,2,3,3,3-heptafluoro-n-propane
  • chlorofluorocarbons such as CCl 3 F.
  • Additional components of HFA formulations for MDI administration include co-solvents, such as ethanol, pentane, water; and surfactants, such as sorbitan trioleate, oleic
  • the formulation is loaded into an aerosol canister, which forms a portion of an MDI device.
  • MDI devices developed specifically for use with HFA propellants are provided in U.S. Patent Nos. 6,006,745 and 6,143,227 .
  • processes of preparing suitable formulations and devices suitable for inhalation dosing see U.S. Patent Nos. 6,268,533 , 5,983,956 , 5,874,063 , and 6,221,398 , and WO 99/53901 , WO 00/61108 , WO 99/55319 and WO 00/30614 .
  • the monoterpene derivative may be encapsulated in liposomes or microcapsules for delivery via inhalation.
  • a liposome is a vesicle composed of a lipid bilayer membrane and an aqueous interior.
  • the lipid membrane may be made of phospholipids, examples of which include phosphatidylcholine such as lecithin and lysolecithin; acidic phospholipids such as phosphatidylserine and phosphatidylglycerol; and sphingophospholipids such as phosphatidylethanolamine and sphingomyelin. Alternatively, cholesterol may be added.
  • a microcapsule is a particle coated with a coating material.
  • the coating material may consist of a mixture of a film-forming polymer, a hydrophobic plasticizer, a surface activating agent or/and a lubricant nitrogen-containing polymer.
  • the monoterpene derivative may also be used alone or in combination with other chemotherapeutic agents via topical application for the treatment of localized cancers such as breast cancer or melanomas.
  • the monoterpene derivative may also be used in combination with narcotics or analgesics for transdermal delivery of pain medication.
  • compositions described above for ocular administration can further comprise a permeation enhancer.
  • the compositions described herein can be formulated as a solution, emulsion, suspension, etc.
  • a variety of vehicles suitable for administering compounds to the eye are known in the art. Specific non-limiting examples are described in U.S. Patent Nos. 6,261,547 ; 6, 197,934 ; 6,056,950 ; 5,800,807 ; 5,776,445 ; 5,698,219 ; 5,521,222 ; 5,403,841 ; 5,077,033 ; 4,882,150 ; and 4,738,851 .
  • the monoterpene derivative can be given alone or in combination with other drugs for the treatment of the above diseases for a short or prolonged period of time.
  • the present compositions can be administered to a mammal, preferably a human. Mammals include, but are not limited to, murines, rats, rabbit, simians, bovines, ovine, porcine, canines, feline, farm animals, sport animals, pets, equine, and primates.
  • a method for inhibiting the growth of a cell in vitro, ex vivo or in vivo where a cell, such as a cancer cell, is contacted with an effective amount of the monoterpene derivative as described herein.
  • Pathological cells or tissue such as hyperproliferative cells or tissue may be treated by contacting the cells or tissue with an effective amount of a composition of this invention.
  • the cells such as cancer cells, can be primary cancer cells or can be cultured cells available from tissue banks such as the American Type Culture Collection (ATCC).
  • the pathological cells can be cells of a systemic cancer, gliomas, meningiomas, pituitary adenomas, or a CNS metastasis from a systemic cancer, lung cancer, prostate cancer, breast cancer, hematopoietic cancer or ovarian cancer.
  • the cells can be from a vertebrate, preferably a mammal, more preferably a human.
  • U.S. Patent Publication No. 2004/0087651 U.S. Patent Publication No. 2004/0087651 .
  • the cytoxicity of the present monoterpene and/or the therapeutic agents may be studied by MTT [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide] cytotoxicity assay.
  • MTT assay is based on the principle of uptake of MTT, a tetrazolium salt, by metabolically active cells where it is metabolized into a blue colored formazon product, which can be read spectrometrically. J. of Immunological Methods 65: 55 63, 1983.
  • the cytoxicity of the present monoterpene derivative and/or the therapeutic agents may be studied by colony formation assay.
  • Functional assays for inhibition of VEGF secretion and IL-8 secretion may be performed via ELISA.
  • Cell cycle block by the present monoterpene derivative and/or the therapeutic agents may be studied by standard propidium iodide (PI) staining and flow cytometry.
  • Invasion inhibition may be studied by Boyden chambers.
  • PI propidium iodide
  • Boyden chambers In this assay a layer of reconstituted basement membrane, Matrigel, is coated onto chemotaxis filters and acts as a barrier to the migration of cells in the Boyden chambers. Only cells with invasive capacity can cross the Matrigel barrier.
  • Other assays include, but are not limited to cell viability assays, apoptosis assays, and morphological assays.
  • Example 1 Synthesis of Dimethyl Celecoxib bisPOH Carbamate (4-(bis-N,N'-4-isopropenyl cyclohex-1-enylmethyloxy carbonyl [5-(2,5-dimethyl phenyl)-3-trifluoromethyl pyrazol-1-yl] benzenesulfonamide)
  • the reaction scheme is the following:
  • Phosgene (20% in toluene, 13 ml, 26.2 mmol) was added to a mixture of perillyl alcohol (2.0 grams, 13.1 mmol) and potassium carbonate (5.4 grams, 39.1 mmol) in dry toluene (30 mL) over a period of 30 minutes while maintaining the temperature between 10° C to 15° C.
  • the reaction mixture was allowed to warm to room temperature and stirred for 8.0 hours under N 2 .
  • the reaction mixture was quenched with water (30 mL) and the organic layer was separated.
  • Perillyl chloroformate (0.11 grams, 0.55 mmol) was added slowly to a mixture of dimethyl celecoxib (0.2 grams, 0.50 mmol) and potassium carbonate (0.13 grams, 1.0 mmol) in dry acetone (10 mL) over a period of 5 minutes under N 2 .
  • the reaction mixture was heated to reflux and maintained for 3 hours. Since TLC analysis indicated the presence of dimethyl celecoxib (> 60%), another 1.0 equivalent of perillyl chloroformate was added and refluxed for an additional 5 hours.
  • the reaction mixture was cooled and acetone was concentrated under vacuum to give a residue.
  • Figure 1 shows the results of the MTT cytotoxicity assays performed on human malignant glioma cells U87, A172 and U251 with DMC alone.
  • the reaction scheme is the following:
  • Oxalyl chloride (0.13 grams, 1.0 mmol) was added slowly to a mixture of temozolomide (OChem Incorporation, 0.1 grams, 0.5 mmol) in 1,2-dichloroethane (10 mL) over a period of 2 minutes while maintaining the temperature at 10° C under N 2 .
  • the reaction mixture was allowed to warm to room temperature and then heated to reflux for 3 hours.
  • the excess of oxalyl chloride and 1,2-dichloroethane were removed by concentration under vacuum.
  • the resulting residue was re-dissolved in 1,2-dichlorethane (15 mL) and the reaction mixture was cooled to 10° C under N 2 .
  • temozolomide POH carbamate was synthesized according to the following procedure. Oxalyl chloride (0.13 grams, 1.0 mmol) was added slowly to a mixture of temozolomide (OChem Incorporation, 0.1 grams, 0.5 mmol) in 1,2-dichloroethane (10 mL) over a period of 2 minutes while maintaining the temperature at 10 °C under N 2 . The reaction mixture was allowed to warm to room temperature and then heated to reflux for 3 hours. The excess of oxalyl chloride and 1,2-dichloroethane were removed by concentration under vacuum.
  • TMZ temozolomide
  • TMZ-resistant glioma cell lines U87, A172 and U251 cells were treated with temozolomide POH carbamate (POH-TMZ) (e.g., synthesized by the method in Example 3).
  • POH-TMZ temozolomide POH carbamate
  • Figure 4 The MTT assay results showed that POH carbamate POH-TMZ exhibited substantially higher kill rates of the various human glioma cells compared to TMZ alone.
  • the reaction scheme is the following:
  • Phosgene (20% in toluene, 13 ml, 26.2 mmol) was added to a mixture of perillyl alcohol (2.0 grams, 13.1 mmol) and potassium carbonate (5.4 grams, 39.1 mmol) in dry toluene (30 mL) over a period of 30 minutes while maintaining the temperature between 10° C to 15°C.
  • the reaction mixture was allowed to warm to room temperature and stirred for 8.0 hours under N 2 .
  • the reaction mixture was quenched with water (30 mL) and the organic layer separated.
  • Butyl lithium (2.5 M, 0.18 mL, 0.45 mmol) was added to a solution of rolipram (GL synthesis, Inc., 0.1 grams, 0.36 mmol) in dry THF at -72°C over a period of 5 minutes under N 2 . After the reaction mixture was stirred for 1.0 hours at -72°C, perillyl chloroformate (dissolved in 4 mL THF) was added over a period of 15 minutes while maintaining the temperature at -72°C. The reaction mixture was stirred for 2.5 hours and quenched with saturated ammonium chloride (5 mL). The reaction mixture was allowed to warm to room temperature and extracted with ethyl acetate (2x15 mL).
  • FIG. 5 shows the MTT assay for increasing concentrations of rolipram and POH-rolipram for A-172 cells.
  • Rolipram alone demonstrates an IC50 of approximately 1000 uM (1 mM). In the presence of POH-rolipram, IC50 is achieved at concentrations as low as 50 uM.
  • Figure 6 shows the MTT assay for increasing concentrations of rolipram with U-87 cells. IC50 is not met at 1000 uM. On the other hand, IC50 iss achieved at 180 uM with POH-rolipram.
  • Figure 7 shows that IC50 for rolipram alone for U251 cells is achieved at 170 uM; plateau cytotoxicity is reached at 60%.
  • POH-rolipram achieves IC50 at 50 uM, with almost 100% cytoxicity at 100 uM.
  • Figure 8 shows that IC50 for rolipram alone for LN229 cells is not achieved even at 100 uM.
  • IC50 for POH-rolipram is achieved at 100 uM, with almost 100% cytotoxicity at 10 uM.
  • Figure 9A shows the images of subcutaneous U-87 gliomas in nude mice treated with butyryl-POH, purified ( S )-perillyl alcohol having a purity greater than 98.5% (“purified POH”), POH purchased from Sigma chemicals, or phosphate buffered saline (PBS; negative control).
  • Figure 9B shows average tumor growth over time (total time period of 60 days). Butyryl-POH demonstrated the greatest inhibition of tumor growth, followed by purified POH and Sigma POH.
  • Example 8 In vitro Cytotoxicity Studies of Temozolomide (TMZ) and Temozolomide POH Carbamate (POH-TMZ) on TMZ sensitive and resistant glioma cells
  • Colony forming assays were carried out after cells were treated with TMZ alone, POH alone, and the TMZ-POH conjugate.
  • the colony forming assays were carried out as described in Chen TC, et al. Green tea epigallocatechin gallate enhances therapeutic efficacy of temozolomide in orthotopic mouse glioblastoma models. Cancer Lett. 2011 Mar 28;302(2):100-8 .
  • Figure 10 shows the results of the colony forming assays performed on TMZ sensitive (U251) and TMZ resistant (U251TR) U251 cells with TMZ or TMZ-POH.
  • TMZ demonstrated cytotoxicity towards TMZ sensitive U251 cells, but had minimal cytotoxicity towards TMZ resistant U251 cells.
  • TMZ-POH demonstrated cytotoxicity towards both TMZ sensitive and TMZ resistant U251 cells.
  • Figure 11 shows the results of the colony forming assays performed on TMZ sensitive (U251) and TMZ resistant (U251TR) U251 cells with POH.
  • POH demonstrated cytotoxicity towards both TMZ sensitive and TMZ resistant U251 cells.
  • POH-TMZ ( Figure 10 ) exhibited substantially greater potency compared to POH alone ( Figure 11 ) in the colony forming assays.
  • Example 9 In vitro Cytotoxicity Studies of Temozolomide POH Carbamate (POH-TMZ) on U251 cells, U251TR cells, and Normal Astrocytes.
  • MTT cytotoxicity assays were carried out after cells were treated with the TMZ-POH conjugate.
  • the MTT cytotoxicity assays were carried out as described in Chen TC, et al. Green tea epigallocatechin gallate enhances therapeutic efficacy of temozolomide in orthotopic mouse glioblastoma models. Cancer Lett. 2011 Mar 28;302(2):100-8 .
  • Figure 12 shows the results of the MTT cytotoxicity assays performed on TMZ sensitive cells (U251), TMZ resistant cells (U251TR) and normal astrocytes.
  • TMZ-POH demonstrated cytotoxicity towards both TMZ sensitive and TMZ resistant U251 cells, but not towards normal astrocytes.
  • Example 10 In vitro Cytotoxicity Studies of Temozolomide POH Carbamate (POH-TMZ) on BEC, TuBEC, and Normal Astrocytes.
  • MTT cytotoxicity assays were carried out after cells were treated with the TMZ-POH conjugate.
  • the MTT cytotoxicity assays were carried out as described in Chen TC, et al. Green tea epigallocatechin gallate enhances therapeutic efficacy of temozolomide in orthotopic mouse glioblastoma models. Cancer Lett. 2011 Mar 28;302(2):100-8 .
  • Figure 13 shows the results of the MTT cytotoxicity assays performed on normal astrocytes, brain endothelial cells (BEC; confluent and subconfluent), and tumor brain endothelial cells (TuBEC).
  • BEC brain endothelial cells
  • TuBEC tumor brain endothelial cells
  • Example 11 In vitro Cytotoxicity Studies of Temozolomide (TMZ) and Temozolomide POH Carbamate (POH-TMZ) on USC-04 Glioma Cancer Stem Cells.
  • MTT cytotoxicity assays were carried out after cells were treated with the TMZ alone, POH alone, or the TMZ-POH conjugate.
  • the MTT cytotoxicity assays were carried out as described in Chen TC, et al. Green tea epigallocatechin gallate enhances therapeutic efficacy of temozolomide in orthotopic mouse glioblastoma models. Cancer Lett. 2011 Mar 28;302(2):100-8 .
  • Figure 14 shows the results of the MTT cytotoxicity assays performed on LTSC-04 glioma cancer stem cells.
  • TMZ did not induce significant cytotoxicity with increasing concentrations (0-400 uM).
  • TMZ-POH demonstrated evidence of cytotoxicity with IC50 at 150 uM.
  • Figure 15 shows the results of the MTT cytotoxicity assays performed on LTSC-04 glioma cancer stem cells treated with POH. POH demonstrated cytotoxicity on LTSC-04 with increasing concentrations (0-2 mM).
  • Example 12 In vitro Cytotoxicity Studies of Temozolomide (TMZ) and Temozolomide POH Carbamate (POH-TMZ) on USC-02 Glioma Cancer Stem Cells.
  • MTT cytotoxicity assays were carried out after cells were treated with the TMZ alone, POH alone, or the TMZ-POH conjugate.
  • the MTT cytotoxicity assays were carried out as described in Chen TC, et al. Green tea epigallocatechin gallate enhances therapeutic efficacy of temozolomide in orthotopic mouse glioblastoma models. Cancer Lett. 2011 Mar 28;302(2):100-8 .
  • Figure 16 shows the results of the MTT cytotoxicity assays performed on USC-02 glioma cancer stem cells.
  • TMZ did not induce significant cytotoxicity with increasing concentrations (0-400 uM).
  • TMZ-POH demonstrated evidence of cytotoxicity with IC50 at 60 uM.
  • Figure 17 shows the results of the MTT cytotoxicity assays performed on USC-02 glioma cancer stem cells treated with POH. POH demonstrated cytotoxicity on USC-02 with increasing concentrations (0-2 mM).
  • Example 13 In vitro Studies of ER stress by Temozolomide POH Carbamate (POH-TMZ) on TMZ sensitive and resistant glioma cells

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EP2609064A4 (en) 2014-04-23
US20200078355A1 (en) 2020-03-12
JP2014505008A (ja) 2014-02-27
JP5982507B2 (ja) 2016-08-31
EP2883543B1 (en) 2016-11-16
US9663428B2 (en) 2017-05-30
EP2898883B1 (en) 2016-11-23
EP3173080A1 (en) 2017-05-31
JP2019052154A (ja) 2019-04-04
CN105078973B (zh) 2020-10-09
BR112013004698A2 (pt) 2016-05-10
WO2012027693A3 (en) 2012-05-10
US8916545B2 (en) 2014-12-23
US9580372B2 (en) 2017-02-28
EP3685835A1 (en) 2020-07-29
US9499461B2 (en) 2016-11-22

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